56th Ave SW over Cannonball River
GoodGrant County, North Dakota · 10 South 4 East of Leith · Structure no. 000000019127350
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected April 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete
- Length
- 244 ft
- 3 main spans
- Daily traffic
- 100
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
56th Ave SW over Cannonball River is a prestressed concrete box beam or girders - single or spread carrying 56th Ave SW over Cannonball River in Grant County, North Dakota. It was built in 2014, so it is 11 years old, younger than the North Dakota average of 48.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 140 by 2038. The structure is 244 ft (74.4 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 56th Ave SW over Cannonball River built?
It was built in 2014, making it 11 years old in 2025.
What condition is 56th Ave SW over Cannonball River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.
How much traffic does 56th Ave SW over Cannonball River carry?
About 100 vehicles per day (2018 count), of which roughly 10% are trucks.
How long is 56th Ave SW over Cannonball River?
The structure is 244 ft (74.4 m) long with a longest span of 82 ft (24.9 m) and a deck 31 ft wide.
Who owns 56th Ave SW over Cannonball River?
It is owned by the County Highway Agency.